Question

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15-(3-2)+ (7-4)=

b) 18-[2+(7-3-8)-10]

c) 25-(8-5+3) - (12-5-8)=

d) 17-{5-3+[8-(5-3)+5]}

e) 7×(9 +5) -12÷(4+2)=

f) 18÷2×5 +6 -4=
g) 3+(16-4×3) -6÷2 =
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Answer 1

Resposta:

a)15-(3-2)+ (7-4)= 15-1+ 3 = 17

b) 18-[2+(7-3-8)-10] = 18-[2-4-10] = 18 -3 = 15

c) 25-(8-5+3) - (12-5-8)= 25-6 +1=20

d) 17-{5-3+[8-(5-3)+5]} = 17-{5-3+[8-2+5]} = 17-{5-3+11} =  17-13 =4

e) 7×(9 +5) -12÷(4+2)= 7×14 -12÷6 = 98 - 2= 96

f) 18÷2×5 +6 -4= 9x5+6-4 = 45+6-4= 47

g) 3+(16-4×3) -6÷2 = 3+(16-12) -6÷2 = 3+4 -6÷2 = 3+12-3 = 12

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